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main.go
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main.go
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// Copyright 2017 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
package main
import (
"fmt"
"os"
"strings"
"github.com/pkg/errors"
"github.com/cockroachdb/cockroach/pkg/sql/ir/irgen/analyzer"
"github.com/cockroachdb/cockroach/pkg/sql/ir/irgen/codegen"
"github.com/cockroachdb/cockroach/pkg/sql/ir/irgen/ir"
"github.com/cockroachdb/cockroach/pkg/sql/ir/irgen/parser"
"github.com/cockroachdb/cockroach/pkg/sql/ir/irgen/template"
)
func irgen() error {
if len(os.Args) < 2 {
return errors.Errorf("usage: %s template definitions...", os.Args[0])
}
var namedTypeses [][]ir.NamedType
for _, name := range os.Args[2:] {
f, err := os.Open(name)
if err != nil {
return err
}
defer f.Close()
defs, err := parser.Parse(name, f)
if err != nil {
return err
}
namedTypes, err := analyzer.Analyze(defs)
if err != nil {
return err
}
namedTypeses = append(namedTypeses, namedTypes)
}
f, err := os.Open(os.Args[1])
if err != nil {
return err
}
defer f.Close()
tmpl, err := template.Parse(f)
if err != nil {
return err
}
// First comment for github/Go; second for reviewable.
// https://github.com/golang/go/issues/13560#issuecomment-277804473
// https://github.com/Reviewable/Reviewable/wiki/FAQ#how-do-i-tell-reviewable-that-a-file-is-generated-and-should-not-be-reviewed
if _, err := fmt.Printf("// Code generated by %s. DO NOT EDIT.\n// GENERATED FILE DO NOT EDIT\n",
strings.Join(os.Args, " ")); err != nil {
return err
}
return codegen.Generate(os.Stdout, tmpl, 1 /*numRefs*/, 2 /*numEnums*/, namedTypeses...)
}
func main() {
if err := irgen(); err != nil {
fmt.Fprintf(os.Stderr, "%s: %s\n", os.Args[0], err)
os.Exit(1)
}
}